Fork-pivot for mitrailleuse.



Patented may 27, ,1902.

` Amm/1ers.

J T S SCHUUBOE FORK PIVUT FR'MITBAILLEUSE.

(Ilo Model.)

W'lussfsj UNITED STATES 4PATENT OFFICE. 'i

.TENS THEODOR SUHR SCHOUBOE, OF RUN GSTED, DENMARK.

` FORK-PIVOTFO'R MITRAILLEUSE.

sPEoIFIcATIoN forming'pare of Letters Patent No. 700,835, dated May 27', 1902. Application filed September 16, 1901. Serial No. 75,614. (No model.)

gaard by Rungsted, Denmark, have invented a Fork-Pivot for Mitrailleuse and other Light Firearms, of which the following is a specication.

The invention refers to a rotary forked support for the pivoting of lighter firearms, such as mitrailleuse and any` other light iirearms and which can be mounted and'dismounted with great rapidity, besides which its construction is such that the weapons line of sight can be brought to follow a mark that moves itself in a plane sloping toward the horizon. The pivot is characterized in such a Way that the usualpivot-tap is replaced by a pivot-foot, which can be turned around a horizontal shaft in the pivot-case and which at the top is provided with a platform, whereupon the real pivot-bearing which bears the movable pivot-fork can be turned.

The invention is shown on theaccompa'n ying drawings, Wherey Figure 1 shows the pivot with the frame, as a side View, partly in section; Fig. 2, same seen from behind, partly in section; and Fig. 3, same seen Without frame and fromabove.

The main parts of the fork-pivot are the pivot-case 1, with the shaft 2 and the Worm 3, the pivot-foot 4, with the platform 5, the pivot-stand 6, the pivot-fork consisting of the forward-extending arm 7, with the bearingfork 8 and the locking-fork 9, and the backward-extending arm lOjWith' the steeringfork 11, the'revolving body 12,7and finally the elevation-rod 13. t

The pivot-case 1 can either, ras shown on the drawings, be fastened onto a three-legged' stand or it can be placed on a gun-carriage or on the breast-Wall in lacaseinate, placement, or something similar. The pivot-foot4 can be turned in the pivotcase l around the horizontal shaft 2 when the worm 3 is moved. V"lhi-apivotfoot has at the top a circularturni'ngplatform 5, which outsidealong the edge .is screw-cut for screwing on a ring 14 with aliange 15, that bears against a ring-shaped flange 16 on the pivot-stand 6. The pivot-stand 6 has at the top a covering that is furnished With a cylindrical perforation that at each end is provided with a con` ical surface 17 18.

The level cylindrical branch of the pivotforks forward-extending arm 7 fits into the perforation of the pivot-stand,the said branch being provided with a conical turned ring 19,

which hears against the corresponding conical surface 17 in the mentioned perforation. The level cylindrical branch of the arm 7 has, moreover, a perforation 20, the rear part of said perforation having a square section, while the foremost part 21 has a circular section. The cylindrical part is narrowed by a yring-shaped projection 22. In the square part of the perforation is inserted a correspondingshaped piece of the backward-extending arm 10, which with a forward conical-shaped ring 23 bears against the corresponding conical surface 18 in the perforation of the pivotstand.

The cylindrical end of the arm 10 is screwcut and furnishedwith a screw-head 24, be-

hind Ywhich projecting head is inclosed a spiral spring 25, that in the rear bears against the above-mentioned ring 22. 1f the screw 24 is screwed on, the tension of the spring 25 will be increased, and consequently the friction between the conical surfaces 17 and 18 and the corresponding conical rings 19 and 23 will be increased. This friction can be so regulated that the arms 7 and l0 cannot be turned around in the pivot-stand under the shooting, Whereas they can be turned With a powerful grasp with the hand.

The upturned part of the arm 7, bent in an angle, forms a fork, the bearing-fork 8, with two branches at the top end in the rearwardly-v extending hooks 26, that render forward open stands for the taps of the Weapon. lWhen these are in place, the stands are automaticing-fork 9, that glides in grooves 27 inside the branches of the bearing-fork. The lockinglally closed by means of a two-branched lockfork is pressed up before the hooks 26, where y by consequently these are closed by a spring 29 inserted in a boring 28 in thestock yof the bearing-fork, which spring acts against. the end of the stock 30 of the locking-fork. The upward movementis limited bya stop-screw 31, that is inserted into a groove 32 in the stock 30. The backward extending short straight arm 10 ends in the steering-fork l1,

that forms a stand for the rotary body 12, wherein there is a rectangular perforation for the elevation-rod 13. The one of the taps of the rotary body has an axial female screw for a binding-screw 33,that can be pressed against a binding-plate 34, inserted in the rotary body. The free end of the binding-screw is furnished with a hand-wheel 35, whose edge is cnt like a file.

The elevation-rod 13 is a straight bar of a fiat rectangular section corresponding to the perforation in the rotary body 12. It is fastened onto the weapon by means of a bindingscrew that is placed in a rotary body of a similar construction as the said body 12.

Bymounting the weapon its two taps are forced down into the bearing-fork 8, whereby the locking-fork 9 is pressed so far down that the taps can glide down its backward-sloping ends into the stands under the hooks 26, whereafter the fork 9 again is lifted up by the spring 29, and thereby closes the bearings.

The dismounting of the Weapon can takeY place after the bearings are opened by pushing down the locking-fork 9 by a press on a handle 36, which is placed in front of the locking-fork.

When elevation is required, the bindingscrew 33 must rst be loosened by turning the hand-wheel 35, and the elevation-rod 13 can then be moved freely through the rotary body 12, because its insertion in the two revolving bodies admits the necessaryfree movement. When the desired elevation is obtained, the binding-screw 33 must again be fixed on.

By directing the weapon sidewise the pivotstand 6 is turned around upon the platform 5 of the pivotfstand.

If the stand or the gun-carriage is placed on a hillside or the one leg or the Wheel of the gun-carriage sinks into the earth, the platform of the pivot-foot can be brought at a level standing by means of the screw 3,

` able with the lire to follow a mark that moves on or that is placed on a plane which forms an angle with the plane of the standing place. This is of great interest during engagement in undulated ground.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isy In combination with the stand, a pivot-case 1 supported thereon, a pivot-foot 4 pivoted 6o within the stand, a worm 3 for operating the pivot-foot, a platform carried by the pivotfoot, a pivot-stand 6 supported on the platform, an arm 7 swiveled in the pivot-stand, an arm 10 inserted within the arm 7, said 65 arms being arranged to support the weapon and having between them and the pivot-stand 6 conical friction-surfaces 17, 19, 18 and 23, means for adj listing the frictional contact between said surfaces including a resilient de- 7o vice and an adjusting device, the said arm 7 having an upwardly-extending branch in the form of a fork provided with hook-shaped bearings 2G, a movable locking-fork 9 carried by the upwardly-extending portion of the arm 7 and coperating with the hook-shaped bearings, the said arm 10 being provided with thev steering-fork 11, a rotary body 12 journaled therein, an elevation-rod 13 supported by said rotary body, and means for adjusting the ele- 8o vation-rod, substantially as described.

In Witness whereof I have hereunto set my hand in the presence of two witnesses.

JENS TIIEODR SUllIt SCIIOUBOE.

Vitnesses EMAR GYLIUs, A. PoUTsEY. 

